Patents by Inventor Tak Sing Wong
Tak Sing Wong has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9937743Abstract: A document and an Anti-counterfeiting method for use in such documents are described. Said document and Anti-counterfeiting method include introducing a plurality of raised nanoscopic to microscopic structures, here referred to as reconfigurable structures, formed over a polymer substrate to induce optical changes, such as structural color and/or optical fuzziness. Dynamic changes using liquids provide the anti-counterfeiting measures.Type: GrantFiled: May 31, 2013Date of Patent: April 10, 2018Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Tak Sing Wong, Sung Hoon Kang, Ximin He
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Patent number: 9932482Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressure (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: GrantFiled: April 20, 2016Date of Patent: April 3, 2018Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Michael Aizenberg, Sung Hoon Kang, Philseok Kim, Tak Sing Wong
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Patent number: 9932484Abstract: A self-healing, scratch resistant slippery surface that is manufactured by wicking a chemically-inert, high-density liquid coating over a roughened solid surface featuring micro and nanoscale topographies is described. Such a slippery surface shows anti-wetting properties, as well as exhibits significant reduction of adhesion of a broad range of biological materials, including particles in suspension or solution. Specifically, the slippery surfaces can be applied to medical devices and equipment to effectively repel biological materials such as blood, and prevent, reduce, or delay coagulation and surface-mediated clot formation. Moreover, the slippery surfaces can be used to prevent fouling by microorganisms such as bacteria.Type: GrantFiled: January 19, 2012Date of Patent: April 3, 2018Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Benjamin Hatton, Donald Ingber, Michael Super, Tak Sing Wong
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Publication number: 20170121624Abstract: A robust and self-healing coating has been developed by incorporating a thermally self-healing chemical coating on smooth and/or roughened solid. When the chemically coated solid is combined with a lubricating fluid, the material system is capable to repel a broad range of liquids and solids. The thermally self-healing chemical coating may be applied on various industrial metals, glass and plastics, and has shown exceptionally physical and chemical robustness as compared to state-of-the-art liquid-repellent coatings.Type: ApplicationFiled: April 10, 2015Publication date: May 4, 2017Inventors: Jing WANG, Tak-Sing WONG
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Publication number: 20170015835Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressure (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transporation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating environments.Type: ApplicationFiled: April 20, 2016Publication date: January 19, 2017Inventors: Joanna AIZENBERG, Michael AIZENBERG, Sung Hoon KANG, Philseok KIM, Tak Sing WONG
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Patent number: 9492578Abstract: Surfaces for information security and protection of physical biometrics, such as a fingerprint, is described. Such biometric information recording surface includes a plurality of raised structures that can reproduce a biometric information when a body part containing the biometric information is applied to the biometric metric information recording surface. The reproduced biometric information can be completely removed by applying a liquid to the plurality of raised structures without need to apply an external physical contact.Type: GrantFiled: May 9, 2013Date of Patent: November 15, 2016Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Tak Sing Wong, Michael Bucaro
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Patent number: 9353646Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: GrantFiled: January 19, 2012Date of Patent: May 31, 2016Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Michael Aizenberg, Sung Hoon Kang, Philseok Kim, Tak Sing Wong
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Patent number: 9121306Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: GrantFiled: December 24, 2013Date of Patent: September 1, 2015Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Michael Aizenberg, Sung Hoon Kang, Tak Sing Wong, Philseok Kim
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Patent number: 9121307Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: GrantFiled: December 24, 2013Date of Patent: September 1, 2015Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Michael Aizenberg, Sung Hoon Kang, Tak Sing Wong, Philseok Kim
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Publication number: 20150209198Abstract: Methods and compositions disclosed herein relate to liquid repellant surfaces having selective wetting and transport properties.Type: ApplicationFiled: July 12, 2013Publication date: July 30, 2015Inventors: Joanna Aizenberg, Tak Sing Wong, Benjamin Hatton
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Publication number: 20150210951Abstract: Methods and compositions disclosed herein relate to liquid repellant surfaces having selective wetting and transport properties. An article having a repellant surface includes a substrate comprising fabric material and a lubricant wetting and adhering to the fabric material to form a stabilized liquid overlayer, wherein the stabilized liquid overlayer covers the fabric material at a thickness sufficient to form a liquid upper surface above the fabric material, wherein the fabric material is chemically functionalized to enhance chemical affinity with the lubricant such that the lubricant is substantially immobilized on the fabric material to form a repellant surface.Type: ApplicationFiled: July 12, 2013Publication date: July 30, 2015Inventors: Joanna Aizenberg, Michael Aizenberg, Tak Sing Wong, Nicolas Vogel, Cicely Shillingford, Philseok Kim, Benjamin Hatton, Stefanie Utech, Oktay Uzun, Steffi Sunny
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Publication number: 20150152270Abstract: The present disclosure describes a strategy to create self-healing, slippery self-lubricating polymers. Lubricating liquids with affinities to polymers can be utilized to get absorbed within the polymer and form a lubricant layer (of the lubricating liquid) on the polymer. The lubricant layer can repel a wide range of materials, including simple and complex fluids (water, hydrocarbons, crude oil and bodily fluids), restore liquid-repellency after physical damage, and resist ice, microorganisms and insects adhesion. Some exemplary applications where self-lubricating polymers will be useful include energy-efficient, friction-reduction fluid handling and transportation, medical devices, anti-icing, optical sensing, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: ApplicationFiled: July 12, 2013Publication date: June 4, 2015Inventors: Joanna Aizenberg, Michael Aizenberg, Jiaxi Cui, Stuart Dunn, Benjamin Hatton, Caitlin Howell, Philseok Kim, Tak Sing Wong, Xi Yao
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Publication number: 20150137502Abstract: A document and an Anti-counterfeiting method for use in such documents are described. Said document and Anti-counterfeiting method include introducing a plurality of raised nanoscopic to microscopic structures, here referred to as reconfigurable structures, formed over a polymer substrate to induce optical changes, such as structural color and/or optical fuzziness. Dynamic changes using liquids provide the anti-counterfeiting measures.Type: ApplicationFiled: May 31, 2013Publication date: May 21, 2015Applicant: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Tak Sing Wong, Sung Hoon Kang, Ximin He
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Publication number: 20150124265Abstract: Surfaces for information security and protection of physical biometrics, such as a fingerprint, is described. Such biometric information recording surface includes a plurality of raised structures that can reproduce a biometric information when a body part containing the biometric information is applied to the biometric metric information recording surface. The reproduced biometric information can be completely removed by applying a liquid to the plurality of raised structures without need to apply an external physical contact.Type: ApplicationFiled: May 9, 2013Publication date: May 7, 2015Inventors: Joanna Aizenberg, Tak Sing Wong, Michael Bucaro
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Publication number: 20140290732Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: ApplicationFiled: December 24, 2013Publication date: October 2, 2014Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Joanna AIZENBERG, Michael AIZENBERG, Sung Hoon KANG, Tak Sing WONG, Philseok KIM
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Publication number: 20140290731Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: ApplicationFiled: December 24, 2013Publication date: October 2, 2014Applicant: President and Fellows of Harvard CollegeInventors: Joanna AIZENBERG, Michael AIZENBERG, Sung Hoon KANG, Tak Sing WONG, Philseok KIM
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Publication number: 20140187666Abstract: A self-healing, scratch resistant slippery surface that is manufactured by wicking a chemically-inert, high-density liquid coating over a roughened solid surface featuring micro and nanoscale topographies is described. Such a slippery surface shows anti-wetting properties, as well as exhibits significant reduction of adhesion of a broad range of biological materials, including particles in suspension or solution. Specifically, the slippery surfaces can be applied to medical devices and equipment to effectively repel biological materials such as blood, and prevent, reduce, or delay coagulation and surface-mediated clot formation. Moreover, the slippery surfaces can be used to prevent fouling by microorganisms such as bacteria.Type: ApplicationFiled: January 19, 2012Publication date: July 3, 2014Applicant: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Benjamin Hatton, Donald Ingber, Michael Super, Tak Sing Wong
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Publication number: 20140147627Abstract: The present disclosure describes a strategy to create self-healing, slippery liquid-infused porous surfaces (SLIPS). Roughened (e.g., porous) surfaces can be utilized to lock in place a lubricating fluid, referred to herein as Liquid B to repel a wide range of materials, referred to herein as Object A (Solid A or Liquid A). SLIPS outperforms other conventional surfaces in its capability to repel various simple and complex liquids (water, hydrocarbons, crude oil and blood), maintain low-contact-angle hysteresis (<2.5°), quickly restore liquid-repellency after physical damage (within 0.1-1 s), resist ice, microorganisms and insects adhesion, and function at high pressures (up to at least 690 atm). Some exemplary application where SLIPS will be useful include energy-efficient fluid handling and transportation, optical sensing, medicine, and as self-cleaning, and anti-fouling materials operating in extreme environments.Type: ApplicationFiled: January 19, 2012Publication date: May 29, 2014Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGEInventors: Joanna Aizenberg, Michael Aizenberg, Sung Hoon Kang, Philseok Kim, Kam Yan Tang, Tak Sing Wong
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Patent number: 8551333Abstract: A microfluidic device for manipulating particles in a fluid has a device body that defines a main channel therein, in which the main channel has an inlet and an outlet. The device body further defines a particulate diverting channel therein, the particulate diverting channel being in fluid connection with the main channel between the inlet and the outlet of the main channel and having a particulate outlet. The microfluidic device also has a plurality of microparticles arranged proximate or in the main channel between the inlet of the main channel and the fluid connection of the particulate diverting channel to the main channel. The plurality of microparticles each comprises a material in a composition thereof having a magnetic susceptibility suitable to cause concentration of magnetic field lines of an applied magnetic field while in operation.Type: GrantFiled: April 7, 2008Date of Patent: October 8, 2013Assignee: The Regents of the University of CaliforniaInventors: Adam Yuh Lin, Tak Sing Wong
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Publication number: 20100044232Abstract: A microfluidic device for manipulating particles in a fluid has a device body that defines a main channel therein, in which the main channel has an inlet and an outlet. The device body further defines a particulate diverting channel therein, the particulate diverting channel being in fluid connection with the main channel between the inlet and the outlet of the main channel and having a particulate outlet. The microfluidic device also has a plurality of microparticles arranged proximate or in the main channel between the inlet of the main channel and the fluid connection of the particulate diverting channel to the main channel. The plurality of microparticles each comprises a material in a composition thereof having a magnetic susceptibility suitable to cause concentration of magnetic field lines of an applied magnetic field while in operation.Type: ApplicationFiled: April 7, 2008Publication date: February 25, 2010Inventors: Adam Yuh Lin, Tak Sing Wong